compound C. H。Br gave a 1H NMR spectrum consisting of a a doublet at 81.7, and...
A compound with the molecular formula C9H22 gave a 1H NMR spectrum consisting of: a doublet at $1.25 a septet at $2.90 and a multiplet at $7.25 The most likely structure is: -CH₂ CH3 CH3CH2CH, CHS AI B) II C) III • D) IV E) v
Estimate the stabilization energy for 1,3-pentadiene using the heats of hydrogenation in Table 1. Table 1. Heats of Hydrogenation for Selected Compounds Compound Moles H2 A H(kJ mol-?) 1-Butene 1 - 127 1-Pentene 1 -126 trans-2-pentene 1 -115 1,3-Butadiene 2 -239 trans-1,3-Pentadiene 2 -226 X 112 kJ mol-1 O 13 k) mol-1 239 kJ mol-1 15 kJ mol-1 28 kJ mol-1 Which of these dienes can undergo a Diels-Alder reaction? I II III IV V I and V I, II...
Problem #23: When compound X (C,H,Br) is reacted with sodium cyanide (NaCN) forms compound Y (C,H,N). Compound Y, upon reduction with H over a Ni catalyst, yields compound Z (C,HIN. The 'H NMR spectrum of X gives two signals, a multiplet at δ = 7.3 ppm (5H) and a singlet at δ 4.25 ppm (2H). The 'H NMR spectrum of Y is similar to that of X in that it shows a multiplet at ö-7.3 ppm (5H) and a singlet...
Which compound matches the following 1H NMR spectrum? doublet, 2H singlet 3H doublet 2H br. singlet 1H 10 PPM NO2 OH OH A D OD ОА OC B
Determine the structure of each compound for each 1H NMR spectrum. Draw the determined structure and annotate (correlate the equivalent protons with the corresponding NMR signal(s) in the spectrum). Compound E, M = 164.20 g/mol io 8 PPM Compound F, M = 108.14 g/mol PPM
Identify the C,H,CI isomer using the following proton NMR data:doublet 8 1.04 (6H) doublet 8 3.35 (2H) multiplet 8 1.95 (IH) A) CH,CH,CH,CH,CI B) (CH)CHCH,CI C) (CH),CCI D) CHCH,CHCICH,4. NMR spectrum of a compound, C,H,Cl, has a pentet at δ 2.19 and triplet at δ 3.72. The ratio is 1:2 , respectively, which isomer is the compound? A) CH,CCI,CH, B) CH,CH,CHCI, C) CH,CHCICH,CI D) CICH,CH,CH,CI 5) The proton NMR spectrum of a compound gives singlets at δ 2.10 and δ...
6. The 1H NMR spectrum for a compound with molecular formula C7H1402 is given below. Propose a structure for this compound and LABEL the protons on your structure to match the appropriate 'H NMR peak. (1 pt) C7H1402 1.12 0.55 1.08 3.2 1.6 PPM
Below are the mass spectrum, IR spectrum, and 1H NMR spectrum for an unknown compound X. Identify and give the systematic name for X. For full marks, rationalize every piece of data. Spectroscopy Lab Below are the mass spectrum, IR spectrum, and 1H NMR spectrum for an unknown compound X. Identify and give the systematic name for X. For full marks, rationalize every piece of data. 0.15 -0.45 A (9) 0.40 0.10 +0.35 10.05 ЛОО 0.30 - 0.00 0.25 4.19...
A compound with molecular formula C8H15ClO3 has the following 1H NMR spectrum. The IR spectrum shows a strong absorption at 1800cm^-1. Which of the following structures is consistent with this spectrum? 8. A compound with a molecular formula CaHisCIO, has the following H NMR spectrum The IR spectrum shOws a strong absorption at 1800 cm. Which of the following structures is consistent with this spectrum? frp.ct 5.4 fciptet PPM 1.7 quartc afet Z+/- 3 +pief tripiet B. C. D. E....
Compound E, chemical formula C5H10O2 , is a volatile liquid (boiling point 88°C). The 13C-NMR spectrum shows signals at ? 171.0, 68.3, 23.0, and 17.6 ppm. The predicted 1H-NMR spectrum is shown, propose a structure for compound E. Compound E, chemical formula C5H1002. is a volatile liquid (boiling point 88°C . The 13C NMR spectrum shows signals at ppm. The predicted 'H-NMR spectrum is shown, propose a structure for compound E. 1710, 68.3, 23.0, and 17.6 3H 6H 1H PPM...